Yurralyi Maya (Karratha Seven Mile) is a 180 MW gas power station in Western Australia, Australia. It is operated by Rio Tinto Australia Pty Ltd. Based on reported annual generation of 597 GWh, it can supply roughly 171k homes. It ranks #111 of 536 Australia power plants by installed capacity. Commissioned in 2010, it is around 16 years old — relatively modern. Its modelled annual emissions are 331,830 t CO₂/yr (Climate TRACE), equivalent to about 77k cars driven for a year. In context, gas supplies about 16.4% of Australia's electricity; the national grid averages 525 gCO₂/kWh (38.6% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id AUS0000218.
Data status
Known data
Modelled source data
Calculated from dataset
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Capacity and fuel are the upstream open-dataset record, not yet matched to a 2026 registry or GEM entry.
capacity: WRI GPPD; fuel: WRI GPPD
In context: how this plant compares
At 180 MW, Yurralyi Maya (Karratha Seven Mile) is well above the median gas plant in Australia (106 MW). Technically it is described as OCGT. Gas plants burn natural gas either in open-cycle turbines for fast peaking, or in combined-cycle units that recover exhaust heat in an HRSG to reach roughly 55–62% efficiency — the cleanest-burning fossil option.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
~331,830 t CO₂/yr (modelled) — in everyday terms
This facility's annual emissions are roughly equivalent to:
Equivalencies via US EPA Greenhouse Gas Equivalencies; modelled emissions from Climate TRACE.
Key facts
- Load factor
- 38%, from 597 GWh of reported generation; the median for 84 gas plants in Australia that report generation is 24%
- Generation trend
- 977 GWh in 2015 and 597 GWh in 2018 (−39%)
- Highest and lowest year
- 2015: 977 GWh; 2018: 597 GWh
- Share of Australia gas capacity
- 0.6% of 29,942 MW across 163 plants in this dataset
- Age among peers
- 35 of 59 dated gas plants in Australia are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Reported generation trend
Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Rio Tinto Australia Pty Ltd.
Local climate & thermal context
This gas plant burns natural gas in a turbine — often in a combined-cycle setup — to generate electricity. It sits in a hot desert climate (Köppen BWh) — Southern Hemisphere, latitude 20.8°S — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
This site has effectively no heating season (tropical/equatorial climate), so winter heat loss is not the driver here. The thermal concern shifts to year-round process heat and humidity/heat-driven corrosion of hot equipment.
A gas turbine here also runs ~9% below its ISO (15°C) rating at this annual mean (typical CCGT curve, estimate).
Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.
Site climate & environmental severity
This site sits in a benign, low-corrosion environment (estimated ISO 9223 class C1 — Very low), with dust abrasion the leading environmental stress.
Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.
How it compares & nearby plants
The #58 largest gas power plant of 163 in Australia by capacity.
Australia has 163 gas power plants in this dataset, together about 29,942 MW of capacity.
Nearby power plants
- Karratha · Gas · 86 MW · Western Australia
- Dampier · Gas · 120 MW · Western Australia
- Burrup Peninsula (Karratha Gas Plant) · Gas · 240 MW · Western Australia
- Burrup Peninsula (Pluto Phase 1) · Gas · 160 MW · Western Australia
- Burrup Peninsula (Karratha Gas Plant) · Gas · 206.3 MW · Western Australia
- Cape Lambert · Gas · 130 MW · Western Australia
Location
Coordinates -20.762, 116.742 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Yurralyi Maya (Karratha Seven Mile)?
Yurralyi Maya (Karratha Seven Mile) is a 180 MW gas power plant in Western Australia, Australia, commissioned in 2010.
How much electricity does Yurralyi Maya (Karratha Seven Mile) generate?
Yurralyi Maya (Karratha Seven Mile) generates about 597 GWh of electricity per year.
Who operates Yurralyi Maya (Karratha Seven Mile)?
Yurralyi Maya (Karratha Seven Mile) is operated by Rio Tinto Australia Pty Ltd.
How much CO₂ does Yurralyi Maya (Karratha Seven Mile) emit?
Yurralyi Maya (Karratha Seven Mile) has modelled emissions of about 331,830 tonnes of CO₂ per year (Climate TRACE).